956894221 has 2 divisors, whose sum is σ = 956894222. Its totient is φ = 956894220.

The previous prime is 956894167. The next prime is 956894227. The reversal of 956894221 is 122498659.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535413321 + 421480900 = 23139^2 + 20530^2 .

It is an emirp because it is prime and its reverse (122498659) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 956894221 - 2¹¹ = 956892173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (956894227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478447110 + 478447111.

It is an arithmetic number, because the mean of its divisors is an integer number (478447111).

Almost surely, 2^956894221 is an apocalyptic number.

It is an amenable number.

956894221 is a deficient number, since it is larger than the sum of its proper divisors (1).

956894221 is an equidigital number, since it uses as much as digits as its factorization.

956894221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 956894221 is about 30933.7068745406. The cubic root of 956894221 is about 985.4198596588.

The spelling of 956894221 in words is "nine hundred fifty-six million, eight hundred ninety-four thousand, two hundred twenty-one".